Primitive arthropods, Biology

Assignment Help:

Primitive Arthropods

The primitive arthropods, Onychophora (for example Peripatus) have a series of paired legs which are not jointed but have a ringed appearance because of the presence of rows of papillae on them. Each leg consists of two parts, a conical proximal part along with their extrinsic muscles, and a small distal part comprising a pair of claws.

183_Primitive Arthropods.png

Figure: Peripatus lateral view of head

The limbs are protracted and retracted. Using these legs, and through extension and contraction of the body for working the legs they crawl. While a segment is extended, the legs are lifted and moved forward; subsequent effective stroke provides the animals a pushing force.


Related Discussions:- Primitive arthropods

Skeletal system - hyoid bone, HYOI D BONE - Also called tongue bone...

HYOI D BONE - Also called tongue bone as lies at the base of the tonuge. One in number. Muscles of tongue and throat are attached to it. Not e :- Except

What is osseointegration, What is Osseointegration Osseointegration was...

What is Osseointegration Osseointegration was the hallmark of success in implant dentistry in the 1980s. It was believed that an implant was successfully integrated when there

What is secretary diarrhoea, Q. What is Secretary diarrhoea? Secretary ...

Q. What is Secretary diarrhoea? Secretary diarrhoea: It is a result of active secretion OF electrolytes and water by the intestinal epithelium caused by bacterial and viral inf

Define streptomycin, Define Streptomycin Streptomycin  causes ototoxici...

Define Streptomycin Streptomycin  causes ototoxicity (usually vestibular disturbance) and, less frequently, renal toxicity.  Amikacin  and kanamycin  commonly cause tinnitus an

Causes of heart failure, It is important to recognise underlying causes and...

It is important to recognise underlying causes and precipitating factors of heart failure for its appropriate management. That would also help in prevention and treatment of heart

Polyarthritis, Polyarthritis  1)  Gonococcal - Therapeutic trial of penc...

Polyarthritis  1)  Gonococcal - Therapeutic trial of pencillin may help in diagnosis of gonococcal  infection.  2)  Viral infections such as rubella and hepatitis B may have

Mechanical removal of gutta percha-endodontics principles, Mechanical remov...

Mechanical removal of Gutta percha - use k file to create channel then removed by H file Remove gutta percha by rotary ( Gates Glidden = GG ) - use suitable size and remo

Gene therapy, In experimental studies, gene therapy has been shown to impro...

In experimental studies, gene therapy has been shown to improve failing human myocardial function. The abnormal function of  myocytes obtained from patients with dilated cardiomyop

Calculate the amount of oxygen - microbial survival, Calculate the Amount o...

Calculate the Amount of Oxygen - Microbial Survival and Growth? The amount of oxygen in the environment influences the microbial growth. Depending on the oxygen requirement, yo

What do you mean by synapses, Q. What do you mean by synapses? Synapses...

Q. What do you mean by synapses? Synapses are the structures that transmit the neural impulse between two neurons. When the electric impulse arrives the presynaptic membrane

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd